1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
<html>
<head>
<title>pcre2_config specification</title>
</head>
<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre2_config man page</h1>
<p>
Return to the <a href="index.html">PCRE2 index page</a>.
</p>
<p>
This page is part of the PCRE2 HTML documentation. It was generated
automatically from the original man page. If there is any nonsense in it,
please consult the man page, in case the conversion went wrong.
<br>
<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include <pcre2.h></b>
</P>
<P>
<b>int pcre2_config(uint32_t <i>what</i>, void *<i>where</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function makes it possible for a client program to find out which optional
features are available in the version of the PCRE2 library it is using. The
arguments are as follows:
<pre>
<i>what</i> A code specifying what information is required
<i>where</i> Points to where to put the information
</pre>
If <i>where</i> is NULL, the function returns the amount of memory needed for
the requested information. When the information is a string, the value is in
code units; for other types of data it is in bytes.
</P>
<P>
If <b>where</b> is not NULL, for PCRE2_CONFIG_JITTARGET,
PCRE2_CONFIG_UNICODE_VERSION, and PCRE2_CONFIG_VERSION it must point to a
buffer that is large enough to hold the string. For PCRE2_CONFIG_MATCHLIMIT,
PCRE2_CONFIG_PARENSLIMIT, and PCRE2_CONFIG_RECURSIONLIMIT it must point to an
unsigned long int variable, and for all other codes to an int variable. The
available codes are:
<pre>
PCRE2_CONFIG_BSR Indicates what \R matches by default:
0 all Unicode line endings
1 CR, LF, or CRLF only
PCRE2_CONFIG_JIT Availability of just-in-time compiler
support (1=yes 0=no)
PCRE2_CONFIG_JITTARGET Information about the target archi-
tecture for the JIT compiler
PCRE2_CONFIG_LINKSIZE Configured internal link size (2, 3, 4)
PCRE2_CONFIG_MATCHLIMIT Default internal resource limit
PCRE2_CONFIG_NEWLINE Code for the default newline sequence:
1 for CR
2 for LF
3 for CRLF
4 for ANY
5 for ANYCRLF
PCRE2_CONFIG_PARENSLIMIT Default parentheses nesting limit
PCRE2_CONFIG_RECURSIONLIMIT Internal recursion depth limit
PCRE2_CONFIG_STACKRECURSE Recursion implementation (1=stack
0=heap)
PCRE2_CONFIG_UNICODE Availability of Unicode support (1=yes
0=no)
PCRE2_CONFIG_UNICODE_VERSION The Unicode version (a string)
PCRE2_CONFIG_VERSION The PCRE2 version (a string)
</pre>
The function yields a non-negative value on success or the negative value
PCRE2_ERROR_BADOPTION otherwise. This is also the result for the
PCRE2_CONFIG_JITTARGET code if JIT support is not available. When a string
is returned the yield is the length of the string, in code units, excluding the
terminating zero.
</P>
<P>
There is a complete description of the PCRE2 native API in the
<a href="pcre2api.html"><b>pcre2api</b></a>
page and a description of the POSIX API in the
<a href="pcre2posix.html"><b>pcre2posix</b></a>
page.
<p>
Return to the <a href="index.html">PCRE2 index page</a>.
</p>
|
